BLASTING METHOD AND BLASTING DEVICE

摘要

Provided is a blast treatment method that can be implemented simply and efficiently blast a treatment subject while preventing fragments of the subject from scattering outward. The blast treatment method is used to blast a treatment subject 10 having a bursting charge 12 and a shell 11, and includes: an inside explosive disposing step of arranging an inside explosive 20 to be used to blast the treatment subject 10 around the treatment subject 10; an outside explosive disposing step of arranging an outside explosive 34 having a greater detonation velocity than the inside explosive 20 at positions on an outer side of the inside explosive 20; and a blast step of simultaneously initiating detonation of the outside explosive 34 at a plurality of positions spaced from each other at predetermined intervals along a particular direction to thereby simultaneously initiate detonations of the inside explosive 20 at a plurality of positions along the particular direction by the detonation of the outside explosive 34, and thereby blasting the treatment subject in such a manner that the detonations of the inside explosive 20 are completed before the detonation of the bursting charge 12 initiated by the detonations of the inside explosive 20 is completed.